I did the same thing, and had a similar result. One anomaly I noticed is that the semi-spherical cap comes out asymmetrical - it bulges up above the center line. The Object does appear to wind up circular normal to the axis, though, so I'll just cut off the cap, bend the truncated cone, and paste the 45-degree-rotated cap back on.

Thanks for the help. This will become an ergonomic pommel product for sport fencing.